Strong and radiative decays of X(3872) as a hadronic molecule with a negative parity

Details Strong and radiative decays of X(3872) as a hadronic molecule with a negative parity Strong and radiative decays of X(3872) as a hadronic molecule with a negative parity

2010-10-18

arxiv.org/abs/1010.3607v1

Prog. Theor. Phys. 126 (2011), 91-113

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1143/PTP.126.91

Properties of X(3872) are studied by regarding it as a $DD^{\ast}$ hadronic molecule with $J^{PC} = 2^{-+}$ in the phenomenological Lagrangian approach. We find that our model with about 97.6% isospin zero component explains the existing data nicely, for example, the ratio $\mathcal{B}(X(3872) \to J/\psi\pi^+\pi^-\pi^0)/\mathcal{B}(X(3872) \to J/\psi\pi^+\pi^-)$. We predict the partial widths of the radiative decays of $X(3872) \to \gamma J/\psi$, $\gamma \psi(2S) $ and the strong decays of $X(3872) \to J/\psi \pi^+ \pi^-$, $J/\psi \pi^+\pi^-\pi^0$ as well as $X(3872) \to \chi_{cJ}\pi^0$. Our analysis shows that the measurement of the ratio $\mathcal{B}(X(3872) \to \chi_{c0}\pi^0)/\mathcal{B}(X(3872) \to \chi_{c1}\pi^0)$ may signal the nature of X(3872).

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